blob: 460a36edf7ff398c7b4729ad6bb4b516faf4f138 [file] [log] [blame]
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001+++++++++++
2Python News
3+++++++++++
4
Anthony Baxterb0c66302004-11-04 05:23:17 +00005(editors: check NEWS.help for information about editing NEWS using ReST.)
6
Benjamin Petersond1735892009-03-07 18:46:21 +00007What's New in Python 3.1 alpha 2?
8=================================
9
10*Release date: XXX*
11
12Core and Builtins
13-----------------
14
Mark Dickinsonbd792642009-03-18 20:06:12 +000015- Issue #4258: Make it possible to use base 2**30 instead of base
16 2**15 for the internal representation of integers, for performance
17 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
18 --enable-big-digits option to configure, which overrides the
19 default. Add sys.int_info structseq to provide information about
20 the internal format.
21
Mark Dickinson081dfee2009-03-18 14:47:41 +000022- Issue #4474: PyUnicode_FromWideChar now converts characters outside
23 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
24 and sizeof(Py_UNICODE) == 2.
25
Eric Smith8ec90442009-03-14 12:29:34 +000026- Issue #5237: Allow auto-numbered fields in str.format(). For
27 example: '{} {}'.format(1, 2) == '1 2'.
28
Antoine Pitrou652e7072009-03-13 19:25:20 +000029- Issue #5392: when a very low recursion limit was set, the interpreter would
30 abort with a fatal error after the recursion limit was hit twice.
31
Benjamin Petersond1735892009-03-07 18:46:21 +000032Library
33-------
34
Lars Gustäbel42e00912009-03-22 20:34:29 +000035- Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
36 forever on incomplete input. That caused tarfile.open() to hang when used
37 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
38 partial bzip2 compressed data.
39
Mark Dickinson79f52032009-03-17 23:12:51 +000040- Issue #2110: Add support for thousands separator and 'n' type
41 specifier to Decimal.__format__
42
Mark Dickinson9c59fe02009-03-17 18:15:08 +000043- Fix Decimal.__format__ bug that swapped the meanings of the '<' and
44 '>' alignment characters.
45
Antoine Pitrou0ae29cf2009-03-13 22:33:17 +000046- The error detection code in FileIO.close() could fail to reflect the `errno`
47 value, and report it as -1 instead.
48
Antoine Pitroua28fcfd2009-03-13 23:42:55 +000049- Issue #5016: FileIO.seekable() could return False if the file position
50 was negative when truncated to a C int. Patch by Victor Stinner.
51
Mark Dickinsonae681df2009-03-21 10:26:31 +000052Extension Modules
53-----------------
54
55- Issue #5463: In struct module, remove deprecated overflow wrapping
56 when packing an integer: struct.pack('=L', -1) now raises
57 struct.error instead of returning b'\xff\xff\xff\xff'.
58
Benjamin Petersond1735892009-03-07 18:46:21 +000059
Benjamin Petersona58a6262009-03-07 16:34:40 +000060What's New in Python 3.1 alpha 1
Barry Warsaw97f005d2008-12-03 16:46:14 +000061================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000062
Benjamin Petersona58a6262009-03-07 16:34:40 +000063*Release date: 2009-03-07*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000064
65Core and Builtins
66-----------------
67
Benjamin Peterson4fa88fa2009-03-04 00:14:51 +000068- The io module has been reimplemented in C for speed.
69
Raymond Hettingerb0d56af2009-03-03 10:52:49 +000070- Give dict views an informative __repr__.
71
Eric Smith5e5c0db2009-02-20 14:25:03 +000072- Issue #5247: Improve error message when unknown format codes are
73 used when using str.format() with str, int, and float arguments.
74
Hirokazu Yamamoto575d1332009-02-16 09:13:20 +000075- Issue #5249: time.strftime returned malformed string when format string
76 contained non ascii character on windows.
77
Benjamin Petersonf5b52242009-03-02 23:31:26 +000078- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
79 source has already been decoded into str.
80
Antoine Pitrou79eee6b2009-02-13 14:01:05 +000081- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
82 rotating the object pointer by 4 bits to the right.
83
Mark Dickinson87ec0852009-02-09 17:15:59 +000084- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
85 it now forces its argument to double before testing for infinity.
86
Benjamin Petersonee1ae7c2009-02-08 21:07:20 +000087- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
88 returns a non-number type.
89
Benjamin Peterson87618552009-02-08 15:00:52 +000090- Issue #5182: Removed memoryview.__str__.
91
Mark Dickinsonc008a172009-02-01 13:59:22 +000092- Issue #1717: Removed builtin cmp() function, dropped tp_compare
93 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
Mark Dickinsone94c6792009-02-02 20:36:42 +000094 the type definition cmpfunc. The tp_compare slot has been renamed
95 to tp_reserved, and is reserved for future usage.
Mark Dickinsonf02e0aa2009-02-01 12:13:56 +000096
Raymond Hettingere8364232009-02-02 22:55:09 +000097- Issue 1242657: the __len__() and __length_hint__() calls in several tools
98 were suppressing all exceptions. These include list() and bytearray().
99
Mark Dickinson1124e712009-01-28 21:25:58 +0000100- Issue #4707: round(x, n) now returns an integer if x is an integer.
101 Previously it returned a float.
102
Antoine Pitroub52ec782009-01-25 16:34:23 +0000103- Issue #4753: By enabling a configure option named '--with-computed-gotos'
104 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
105 evaluation loop is compiled with a new dispatch mechanism which gives
106 speedups of up to 20%, depending on the system, on various benchmarks.
107
Antoine Pitrou81fabdb2009-01-22 10:11:36 +0000108- Issue #4874: Most builtin decoders now reject unicode input.
109
Mark Dickinson9ffc0202009-01-20 20:45:53 +0000110- Issue #4842: Don't allow trailing 'L' when constructing an integer
111 from a string.
112
Benjamin Peterson05e782f2009-01-19 15:15:02 +0000113- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
114
Antoine Pitroue4bc7f62009-01-17 21:06:43 +0000115- Issue #4838: When a module is deallocated, free the memory backing the
116 optional module state data.
117
Mark Dickinson8055afd2009-01-17 10:04:45 +0000118- Issue #4910: Rename nb_long slot to nb_reserved, and change its
119 type to (void *).
120
Antoine Pitrou8d4e5052009-01-13 22:59:11 +0000121- Issue #4935: The overflow checking code in the expandtabs() method common
122 to str, bytes and bytearray could be optimized away by the compiler, letting
123 the interpreter segfault instead of raising an error.
124
Amaury Forgeot d'Arcf343e012009-01-12 23:58:21 +0000125- Issue #3720: Fix a crash when an iterator modifies its class and removes its
126 __next__ method.
127
Mark Dickinsone5e298f2009-01-12 20:49:19 +0000128- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
129 function no longer attempt to call the __long__ slot to convert an object
130 to an integer. Only the __int__ and __trunc__ slots are examined.
131
Martin v. Löwis7c2b66c2009-01-12 08:21:03 +0000132- Issue #4893: Use NT threading on CE.
133
Martin v. Löwisec59d042009-01-12 07:59:10 +0000134- Issue #4915: Port sysmodule to Windows CE.
135
Antoine Pitrouab868312009-01-10 15:40:25 +0000136- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
137 common cases are optimized thanks to a dedicated fast path and a moderate
138 amount of loop unrolling.
139
Antoine Pitrou14b78f52009-01-09 22:27:08 +0000140- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
141 collecting the oldest generation) so that allocating lots of objects without
142 destroying them does not show quadratic performance. Based on a proposal by
143 Martin von Löwis at
144 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
145
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000146- Issue #4604: Some objects of the I/O library could still be used after
Antoine Pitrou8043cf82009-01-09 19:54:29 +0000147 having been closed (for instance, a read() call could return some
148 previously buffered data). Patch by Dmitry Vasiliev.
149
Antoine Pitrou05608432009-01-09 18:53:14 +0000150- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
151 flag to work properly. Furthermore, when specifying -u, the text stdout
152 and stderr streams have line-by-line buffering enabled (the default being
153 to buffer arbitrary chunks of data).
154
Raymond Hettinger35631532009-01-09 03:58:09 +0000155- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
156 instead of ints (reducing its size from 4 to 8 times thereby reducing
157 Python's overall memory).
158
Antoine Pitroud35cbf62009-01-06 19:02:24 +0000159- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
160 an existing .py counterpart, override the co_filename attributes of all
161 code objects if the original filename is obsolete (which can happen if the
162 file has been renamed, moved, or if it is accessed through different paths).
163 Patch by Ziga Seilnacht and Jean-Paul Calderone.
164
Antoine Pitrouc3b39242009-01-03 16:59:18 +0000165- Issue #4580: Fix slicing of memoryviews when the item size is greater than
166 one byte. Also fixes the meaning of len() so that it returns the number of
167 items, rather than the size in bytes.
168
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000169- Issue #4075: Use OutputDebugStringW in Py_FatalError.
170
Amaury Forgeot d'Arc374e2202009-01-01 23:05:36 +0000171- Issue #4747: When the terminal does not use utf-8, executing a script with
172 non-ascii characters in its name could fail with a "SyntaxError: None" error.
173
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000174- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
Hirokazu Yamamoto8ed9a802009-01-01 16:09:52 +0000175 file with `bytes' filename on Windows.
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000176
Antoine Pitrou7ddda782009-01-01 15:35:33 +0000177- Issue #3680: Reference cycles created through a dict, set or deque iterator
178 did not get collected.
179
Nick Coghlanf1f2f682008-12-30 07:29:12 +0000180- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
181 where the tp_hash and tp_dict slots are both NULL.
182
Georg Brandlccc47b62008-12-28 11:44:14 +0000183- Issue #4759: None is now allowed as the first argument of
184 bytearray.translate(). It was always allowed for bytes.translate().
185
Skip Montanaro80072cb2008-12-23 03:51:14 +0000186- Added test case to ensure attempts to read from a file opened for writing
187 fail.
188
Antoine Pitrou51f3ef92008-12-20 13:14:23 +0000189- Issue #3106: Speedup some comparisons (str/str and int/int).
190
Antoine Pitrouf289ae62008-12-18 11:06:25 +0000191- Issue #2183: Simplify and optimize bytecode for list, dict and set
192 comprehensions. Original patch for list comprehensions by Neal Norwitz.
193
Antoine Pitrou621601a2008-12-17 23:18:19 +0000194- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
195 print elapsed times, not only when some objects are uncollectable /
196 unreachable. Original patch by Neil Schemenauer.
197
Mark Dickinson54bc1ec2008-12-17 16:19:07 +0000198- Issue #3439: Add a bit_length method to int.
199
Mark Dickinsonda2706b2008-12-11 18:03:03 +0000200- Issue #2173: When getting device encoding, check that return value of
201 nl_langinfo is not the empty string. This was causing silent build
202 failures on OS X.
203
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +0000204- Issue #4597: Fixed several opcodes that weren't always propagating
205 exceptions.
206
207- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +0000208 context manager returns a value that cannot be converted to a bool.
209
Mark Dickinsonfd24b322008-12-06 15:33:31 +0000210- Issue #4445: Replace "sizeof(PyBytesObject)" with
211 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
212 bytes instances. On a typical machine this saves 3 bytes of memory
213 (on average) per allocation of a bytes instance.
214
Christian Heimesa872de52008-12-05 08:26:55 +0000215- Issue #4533: File read operation was dreadfully slow due to a slowly
216 growing read buffer. Fixed by using the same growth rate algorithm as
217 Python 2.x.
218
Antoine Pitrou5504e892008-12-06 21:27:53 +0000219- Issue #4509: Various issues surrounding resize of bytearray objects to
220 which there are buffer exports (e.g. memoryview instances).
221
Georg Brandlf9734072008-12-07 15:30:06 +0000222- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
223 method on file objects with closefd=False. The file descriptor is still
224 kept open but the file object behaves like a closed file. The ``FileIO``
225 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +0000226
Antoine Pitroubc420402008-12-07 20:14:49 +0000227- Issue #4569: Interpreter crash when mutating a memoryview with an item size
228 larger than 1.
229
Benjamin Peterson371ccfb2008-12-27 19:03:36 +0000230- Issue #4748: Lambda generators no longer return a value.
231
Gregory P. Smithccc5ae72009-03-02 05:21:55 +0000232- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
233
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000234Library
235-------
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000236
Antoine Pitrou350370c2009-03-14 00:13:13 +0000237- Issue #1222: locale.format() bug when the thousands separator is a space
238 character.
239
Tarek Ziadé516db942009-03-11 12:52:00 +0000240- Issue #5472: Fixed distutils.test_util tear down. Original patch by
241 Tim Golden.
242
Raymond Hettinger5bb0f0e2009-03-10 12:56:32 +0000243- collections.deque() objects now have a read-only attribute called maxlen.
244
Guilherme Polof45b4cc2009-03-07 02:19:14 +0000245- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
246 it is has been populated and properly configured in order to prevent
247 window flashing.
248
Guilherme Polo56f5be52009-03-07 01:54:57 +0000249- Issue #4792: Prevent a segfault in _tkinter by using the
250 guaranteed to be safe interp argument given to the PythonCmd in place of
251 the Tcl interpreter taken from a PythonCmd_ClientData.
252
253- Issue #5193: Guarantee that tkinter.Text.search returns a string.
254
Tarek Ziadé63b64c02009-03-07 00:51:53 +0000255- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
256 Original patch by Akira Kitada.
257
Hirokazu Yamamoto54d0df62009-03-06 03:04:07 +0000258- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
259
Hirokazu Yamamoto8e722bc2009-03-05 14:33:01 +0000260- Issue #5385: Fixed mmap crash after resize failure on windows.
261
Hirokazu Yamamoto0c988172009-03-03 22:41:26 +0000262- Issue #5179: Fixed subprocess handle leak on failure on windows.
263
Raymond Hettinger2d32f632009-03-02 21:24:57 +0000264- PEP 372: Added collections.OrderedDict().
265
Raymond Hettingera4f52b12009-03-02 22:28:31 +0000266- The _asdict() for method for namedtuples now returns an OrderedDict().
267
Raymond Hettinger0663a1e2009-03-02 23:06:00 +0000268- configparser now defaults to using an ordered dictionary.
269
Benjamin Petersone0124bd2009-03-09 21:04:33 +0000270- Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
271 import guess_extension`` was used.
272
Hirokazu Yamamoto10c99372009-02-28 12:21:53 +0000273- Issue #1733986: Fixed mmap crash in accessing elements of second map object
274 with same tagname but larger size than first map. (Windows)
275
Hirokazu Yamamoto39c6dea2009-02-28 10:56:50 +0000276- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
277 overrun.
278
Tarek Ziadéf0721222009-02-28 10:16:43 +0000279- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
280 bdist_rpm command.
281
282- Issue #5378: added --quiet option to Distutils bdist_rpm command.
283
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000284- Issue #5052: make Distutils compatible with 2.3 again.
285
Tarek Ziadé0f31e6d2009-02-25 22:31:38 +0000286- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
287 in Distutils tests.
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000288
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000289- Issue #5287: Add exception handling around findCaller() call to help out
290 IronPython.
291
Hirokazu Yamamoto0654ccd2009-02-18 16:38:00 +0000292- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
293 The file was resized to wrong size.
294
295- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
296
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000297- Issue #2279: distutils.sdist.add_defaults now add files
Tarek Ziadé0d0506e2009-02-16 21:49:12 +0000298 from the package_data and the data_files metadata.
299
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000300- Issue #5257: refactored all tests in distutils, so they use
Tarek Ziadéc1375d52009-02-14 14:35:51 +0000301 support.TempdirManager, to avoid writing in the tests directory.
302
Tarek Ziadé68c50952009-02-13 23:04:17 +0000303- Issue #4524: distutils build_script command failed with --with-suffix=3.
304 Initial patch by Amaury Forgeot d'Arc.
305
Tarek Ziadé811d6242009-02-13 22:26:15 +0000306- Issue #2461: added tests for distutils.util
307
Mark Dickinsonc28ad272009-02-12 17:58:36 +0000308- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
309 which inherited from numbers.py which did not have __slots__ defined. The
310 numbers hierarchy now has its own __slots__ declarations.
311
Antoine Pitroub353c122009-02-11 00:39:14 +0000312- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
313 encoding.
314
Thomas Heller465c8022009-02-10 18:59:04 +0000315- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
316 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
317
Tarek Ziadé7d5e9872009-02-10 12:36:33 +0000318- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
319 under NT and OS2. Patch by Philip Jenvey.
320
Brett Cannonbefb14f2009-02-10 02:10:16 +0000321- Issue #5128: Make compileall properly inspect bytecode to determine if needs
322 to be recreated. This avoids a timing hole thanks to the old reliance on the
323 ctime of the files involved.
324
Guilherme Polob681df42009-02-09 22:33:59 +0000325- Issue #5122: Synchronize tk load failure check to prevent a potential
326 deadlock.
327
Benjamin Petersona86f2c02009-02-10 02:41:10 +0000328- Issue #1818: collections.namedtuple() now supports a keyword argument
329 'rename' which lets invalid fieldnames be automatically converted to
330 positional names in the form, _1, _2, ...
331
Guilherme Poloae098992009-02-09 16:44:24 +0000332- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
333
Nick Coghlan9a1d6e32009-02-08 03:37:27 +0000334- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
335 public documented method ``ZipImporter.get_filename()``.
336
Nick Coghlan3f48ae32009-02-08 01:58:26 +0000337- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
338 the execution of packages by looking for and executing a ``__main__``
339 submodule when a package name is supplied. Initial patch by Andi
340 Vajda.
341
Guilherme Polo491aee22009-02-06 23:16:11 +0000342- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
343 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
344 Tkapp_Call when calling from a thread different than the one that created
345 the Tcl interpreter. Patch by Robert Hancock.
346
Eric Smith0e5b5622009-02-06 01:32:42 +0000347- Issue #4285: Change sys.version_info to be a named tuple. Patch by
348 Ross Light.
349
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000350- Issue #1520877: Now distutils.sysconfig reads $AR from the
Tarek Ziadéd3409de2009-02-06 01:18:36 +0000351 environment/Makefile. Patch by Douglas Greiman.
352
Tarek Ziadé70a74eb2009-02-06 00:38:35 +0000353- Issue #1276768: The verbose option was not used in the code of
354 distutils.file_util and distutils.dir_util.
355
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000356- Issue #5132: Fixed trouble building extensions under Solaris with
Tarek Ziadé5874ef12009-02-05 22:56:14 +0000357 --enabled-shared activated. Initial patch by Dave Peterson.
358
Guilherme Polo7f423952009-02-02 21:17:09 +0000359- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
360
Raymond Hettinger85602262009-02-03 04:19:10 +0000361- The shelve module now defaults to pickle protocol 3.
362
Brett Cannone61426e2009-01-30 01:31:34 +0000363- Fix a bug in the trace module where a bytes object from co_lnotab had its
364 items being passed through ord().
365
Antoine Pitrou0dcc3cd2009-01-29 20:26:59 +0000366- Issue #2047: shutil.move() could believe that its destination path was
367 inside its source path if it began with the same letters (e.g. "src" vs.
368 "src.new").
369
Guilherme Polo5f238482009-01-28 14:41:10 +0000370- Added the ttk module. See issue #2983: Ttk support for Tkinter.
371
Raymond Hettinger89e12962009-01-26 02:09:03 +0000372- Removed isSequenceType(), isMappingType, and isNumberType() from the
373 operator module; use the abstract base classes instead. Also removed
374 the repeat() function; use mul() instead.
375
Raymond Hettinger0f055172009-01-27 10:06:09 +0000376- Issue 5021: doctest.testfile() did not create __name__ and
377 collections.namedtuple() relied on __name__ being defined.
378
379- Backport importlib from Python 3.1. Only the import_module() function has
380 been backported to help facilitate transitions from 2.7 to 3.1.
381
Tarek Ziadé0302cf52009-01-26 17:23:20 +0000382- Issue #1885: distutils. When running sdist with --formats=tar,gztar
383 the tar file was overriden by the gztar one.
384
Tarek Ziadé4d4456f2009-01-25 18:27:45 +0000385- Issue #4863: distutils.mwerkscompiler has been removed.
386
Raymond Hettingerd07d9392009-01-27 04:20:44 +0000387- Added a new itertools functions: combinations_with_replacement()
388 and compress().
Raymond Hettinger6b3b0fc2009-01-26 02:56:58 +0000389
Raymond Hettinger30729212009-02-12 06:28:27 +0000390- Issue 5032: added a step argument to itertools.count() and
391 allowed non-integer arguments.
392
Jesse Noller41faa542009-01-25 03:45:53 +0000393- Fix and properly document the multiprocessing module's logging
394 support, expose the internal levels and provide proper usage
395 examples.
396
Mark Dickinsoncddcf442009-01-24 21:46:33 +0000397- Issue #1672332: fix unpickling of subnormal floats, which was
398 producing a ValueError on some platforms.
399
Martin v. Löwisacbf4612009-01-24 16:19:45 +0000400- Issue #3881: Help Tcl to load even when started through the
401 unreadable local symlink to "Program Files" on Vista.
402
Martin v. Löwis59e47792009-01-24 14:10:07 +0000403- Issue #4710: Extract directories properly in the zipfile module;
404 allow adding directories to a zipfile.
405
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000406- Issue #3807: _multiprocessing build fails when configure is passed
Jesse Noller6fd47e22009-01-23 14:09:08 +0000407 --without-threads argument. When this occurs, _multiprocessing will
408 be disabled, and not compiled.
409
Antoine Pitrou08838b62009-01-21 00:55:13 +0000410- Issue #5008: When a file is opened in append mode with the new IO library,
411 do an explicit seek to the end of file (so that e.g. tell() returns the
412 file size rather than 0). This is consistent with the behaviour of the
413 traditional 2.x file object.
414
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000415- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
416 parameter was set.
417
Mark Dickinson8dd05142009-01-20 20:43:58 +0000418- Issue #4842: Always append a trailing 'L' when pickling longs using
419 pickle protocol 0. When reading, the 'L' is optional.
420
Brett Cannonafccd632009-01-20 02:21:27 +0000421- Add the importlib package.
422
Jesse Noller9a0fc972009-01-18 21:12:58 +0000423- Issue #4301: Patch the logging module to add processName support, remove
424 _check_logger_class from multiprocessing.
425
Jesse Noller1cbb17a2009-01-18 19:45:18 +0000426- Issue #3325: Remove python2.x try: except: imports for old cPickle from
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000427 multiprocessing.
Jesse Nollerf70a5382009-01-18 19:44:02 +0000428
Benjamin Peterson9953a8d2009-01-17 04:15:01 +0000429- Issue #4959: inspect.formatargspec now works for keyword only arguments
430 without defaults.
431
Jesse Noller6214edd2009-01-19 16:23:53 +0000432- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
433 for *nix machines for negative handles and large int handles. Without this check
434 it is possible to segfault the interpreter.
435
Jesse Nollerb0516a62009-01-18 03:11:38 +0000436- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
437 in sharedctypes.py.
438
439- Issue #1225107: inspect.isclass() returned True for instances with a custom
440 __getattr__.
441
Gregory P. Smithde3369f2009-01-12 04:50:11 +0000442- Issue #3826 and #4791: The socket module now closes the underlying socket
443 appropriately when it is being used via socket.makefile() objects
444 rather than delaying the close by waiting for garbage collection to do it.
445
Raymond Hettingerb8baf632009-01-14 02:20:07 +0000446- Issue #1696199: Add collections.Counter() for rapid and convenient
447 counting.
448
Antoine Pitrou308705e2009-01-10 16:22:51 +0000449- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
450
Thomas Heller5e4e4272009-01-08 09:34:20 +0000451- Issue #4867: Fixed a crash in ctypes when passing a string to a
452 function without defining argtypes.
453
Antoine Pitrou42db3ef2009-01-04 21:37:59 +0000454- Issue #4272: Add an optional argument to the GzipFile constructor to override
455 the timestamp in the gzip stream. The default value remains the current time.
456 The information can be used by e.g. gunzip when decompressing. Patch by
457 Jacques Frechet.
458
Mark Dickinson315a20a2009-01-04 21:34:18 +0000459- Restore Python 2.3 compatibility for decimal.py.
460
Guilherme Polo3f5f8222009-01-03 22:00:39 +0000461- Issue #3638: Remove functions from _tkinter module level that depend on
462 TkappObject to work with multiple threads.
463
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000464- Issue #4718: Adapt the wsgiref package so that it actually works with
465 Python 3.x, in accordance with the `official amendments of the spec
Antoine Pitrou38a66ad2009-01-03 18:41:49 +0000466 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
467
Raymond Hettinger771ed762009-01-03 19:20:32 +0000468- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
469 to the decimal module.
470
Georg Brandl3a9b0622009-01-03 22:07:57 +0000471- Fractions.from_float() no longer loses precision for integers too big to
472 cast as floats.
473
Mark Dickinsonf9236412009-01-02 23:23:21 +0000474- Issue #4812: add missing underscore prefix to some internal-use-only
475 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
476
Georg Brandl3a9b0622009-01-03 22:07:57 +0000477- Issue 4790: The nsmallest() and nlargest() functions in the heapq module
478 did unnecessary work in the common case where no key function was specified.
479
Georg Brandlb1441c72009-01-03 22:33:39 +0000480- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
481 the function is not a generator.
482
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000483- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
484 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Tarek Ziadé9df8ce32008-12-30 23:09:20 +0000485
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000486- Issue #4646: distutils was choking on empty options arg in the setup
Tarek Ziadé4450dcf2008-12-29 22:38:38 +0000487 function. Original patch by Thomas Heller.
488
Martin v. Löwis1f1620e2008-12-29 16:27:13 +0000489- Issue #3767: Convert Tk object to string in tkColorChooser.
490
Martin v. Löwise354d782008-12-29 16:03:04 +0000491- Issue #3248: Allow placing ScrolledText in a PanedWindow.
492
Antoine Pitrou5acd41e2008-12-28 14:29:00 +0000493- Issue #4444: Allow assertRaises() to be used as a context handler, so that
494 the code under test can be written inline if more practical.
495
Georg Brandldb7b6b92009-01-01 15:53:14 +0000496- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
497 works as expected in the interactive environment.
498
Antoine Pitroudb5fe662008-12-27 15:50:40 +0000499- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
500 Gabriel Genellina.
501
Antoine Pitrou180a3362008-12-14 16:36:46 +0000502- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
503 boundary.
504
Nick Coghlanf088e5e2008-12-14 11:50:48 +0000505- Issue #4223: inspect.getsource() will now correctly display source code
506 for packages loaded via zipimport (or any other conformant PEP 302
507 loader). Original patch by Alexander Belopolsky.
508
509- Issue #4201: pdb can now access and display source code loaded via
510 zipimport (or any other conformant PEP 302 loader). Original patch by
511 Alexander Belopolsky.
512
513- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
514 302 conformant loader) will now work correctly in most cases (they
515 are still subject to the constraints that exist for all code running
516 from inside a module loaded via a PEP 302 loader and attempting to
517 perform IO operations based on __file__). Original patch by
518 Alexander Belopolsky.
519
520- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
521 allows backporting to maintenance branches. Original patch by
522 Alexander Belopolsky.
523
Antoine Pitrou7c59bc62008-12-13 23:20:54 +0000524- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
525 a non-ASCII letter.
526
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +0000527- Issue #4616: TarFile.utime(): Restore directory times on Windows.
528
Benjamin Peterson433f32c2008-12-12 01:25:05 +0000529- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
530 codec cannot be found. This is for compatibility with the builtin behavior.
531
Facundo Batista708d5812008-12-11 04:20:07 +0000532- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
533 give correct results in the case where one argument is a quiet NaN
534 and the other is a finite number that requires rounding.
535
Skip Montanaroc1ce2862008-12-06 17:25:02 +0000536- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
537 libs.
538
Georg Brandlf9734072008-12-07 15:30:06 +0000539- Added the subprocess.check_call_output() convenience function to get output
540 from a subprocess on success or raise an exception on error.
541
542- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
543 support unusual filenames (such as those containing semi-colons) in
544 Content-Disposition headers.
545
546- Issue #4384: Added logging integration with warnings module using
547 captureWarnings(). This change includes a NullHandler which does nothing;
548 it will be of use to library developers who want to avoid the "No handlers
549 could be found for logger XXX" message which can appear if the library user
550 doesn't configure logging.
551
552- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
553 exception.
554
Georg Brandleee31162008-12-07 15:15:22 +0000555- Issue #4529: fix the parser module's validation of try-except-finally
556 statements.
557
558- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
559 not a malformed option.
560
561- Added the subprocess.check_output() convenience function to get output
562 from a subprocess on success or raise an exception on error.
563
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +0000564- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
565 the corresponding tests now pass.
566
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +0000567- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
568 it was calling the wrong open() function.
569
Fred Drake9a0a65b2008-12-04 19:24:50 +0000570- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
571 support unusual filenames (such as those containing semi-colons) in
572 Content-Disposition headers.
573
Matthias Klose2c7e3ee2009-01-10 17:08:25 +0000574- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
575 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
576
Benjamin Peterson5c6d7872009-02-06 02:40:07 +0000577- Issue #5104: The socket module now raises OverflowError when 16-bit port and
578 protocol numbers are supplied outside the allowed 0-65536 range on bind()
579 and getservbyport().
580
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000581Tools/Demos
582-----------
583
Antoine Pitrou8a681222009-02-07 17:13:31 +0000584- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
585 and make it 2.6-compatible.
586
Guilherme Poloa7d27972009-01-28 16:06:51 +0000587- Ttk demos added in Demo/tkinter/ttk/
588
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000589- Issue #4677: add two list comprehension tests to pybench.
590
Georg Brandlb1441c72009-01-03 22:33:39 +0000591
592Build
593-----
594
Matthias Klose906785c2009-02-22 23:18:38 +0000595- Link the shared python library with $(MODLIBS).
596
Martin v. Löwis11f72102009-02-10 13:13:30 +0000597- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
598
Martin v. Löwisbc186a82009-02-02 15:32:22 +0000599- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
600
Martin v. Löwise97637d2009-01-11 09:45:11 +0000601- Issue #4895: Use _strdup on Windows CE.
602
Georg Brandlb1441c72009-01-03 22:33:39 +0000603- Issue #4472: "configure --enable-shared" now works on OSX
604
605- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
606
607- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
608
609- Issue #4289: Remove Cancel button from AdvancedDlg.
610
611- Issue #1656675: Register a drop handler for .py* files on Windows.
612
613- Issue #4120: Exclude manifest from extension modules in VS2008.
614
615- Issue #4091: Install pythonxy.dll in system32 again.
616
617- Issue #4018: Disable "for me" installations on Vista.
618
619- Issue #3758: Add ``patchcheck`` build target to .PHONY.
620
621- Issue #4204: Fixed module build errors on FreeBSD 4.
622
623
624C-API
625-----
626
Mark Dickinson21776072009-02-10 16:13:25 +0000627- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
628 for negative arguments. Previously, it raised TypeError.
629
Georg Brandlb1441c72009-01-03 22:33:39 +0000630- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
631
632- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
633 the GIL is released, or owned by another thread.
634
635- Issue #4122: On Windows, fix a compilation error when using the
636 Py_UNICODE_ISSPACE macro in an extension module.
637
638
Mark Dickinsone675f082008-12-11 21:56:00 +0000639Extension Modules
640-----------------
641
Gregory P. Smith365a1862009-02-12 07:35:29 +0000642- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
643 supporting objects as input no matter how it was compiled (built in
644 implementations or external openssl library).
645
Mark Dickinson29500f62009-01-15 15:36:10 +0000646- Issue #4397: Fix occasional test_socket failure on OS X.
647
Martin v. Löwisa9b54c72009-01-11 09:30:50 +0000648- Issue #4279: Fix build of parsermodule under Cygwin.
649
Antoine Pitroubcd5cbe2009-01-08 21:17:16 +0000650- Issue #4751: hashlib now releases the GIL when hashing large buffers
651 (with a hardwired threshold of 2048 bytes), allowing better parallelization
652 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
653
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000654- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
655
Antoine Pitrou31f30b12009-01-02 17:34:35 +0000656- Issue #4738: Each zlib object now has a separate lock, allowing to compress
657 or decompress several streams at once on multi-CPU systems. Also, the GIL
658 is now released when computing the CRC of a large buffer. Patch by ebfe.
659
Georg Brandlb1441c72009-01-03 22:33:39 +0000660- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
661
Martin v. Löwis05bfe1f2008-12-29 18:21:47 +0000662- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
663
Mark Dickinsone675f082008-12-11 21:56:00 +0000664- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
665 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +0000666
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +0000667- Issue #4583: array.array would not always prohibit resizing when a buffer
668 has been exported, resulting in an interpreter crash when accessing the
669 buffer.
670
Martin v. Löwis841edad2008-11-30 10:36:49 +0000671
Guilherme Polo9de29af2009-01-28 20:40:48 +0000672Tests
673-----
674
675- Issue #5083: New 'gui' resource for regrtest.
676
677
Brett Cannon7317c1e2008-11-25 19:19:17 +0000678Docs
679----
680
Georg Brandl52b92cc2008-05-25 09:43:03 +0000681
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +0000682**(For information about older versions, consult the HISTORY file.)**